US-12626969-B2 - Battery pack and energy storage device

US12626969B2US 12626969 B2US12626969 B2US 12626969B2US-12626969-B2

Abstract

The present utility model discloses a battery pack and an energy storage device. The battery pack includes at least two battery modules and at least one cooling assembly. Each battery module includes a support having a splicing portion and a plurality of battery cells mounted in the support, and two adjacent battery modules are connected to each other by two splicing portions. The at least one cooling assembly is sandwiched between the two adjacent battery modules and is in contact with the battery cells located on opposite sides of the at least one cooling assembly. According to the battery pack, the battery modules and the cooling assembly can be spliced as needed, then battery packs with different numbers of battery cells can be conveniently achieved, and the cost of the battery pack is reduced.

Inventors

Qiqi HUO

Assignees

HITHIUM TECH HK LIMITED

Dates

Publication Date: 20260512
Application Date: 20221025
Priority Date: 20220106

Claims (14)

1 . A battery pack, comprising: at least two battery modules, wherein each of the at least two battery modules comprises a support having a splicing portion and a plurality of battery cells mounted in the support, and wherein two adjacent battery modules are connected to each other by two splicing portions; and at least one cooling assembly sandwiched between the two adjacent battery modules and in contact with battery cells located on opposite sides of the at least one cooling assembly, wherein the support comprises a first support and a second support that are adjacent to each other, wherein the first support includes a front side and a rear side, the front side and the rear side of the first support being each provided with two first splicing sub-portions, wherein the two first splicing sub-portions are located at a top and a bottom of a same side of the first support, respectively: wherein the second support includes a front side and a rear side, the front side and the rear side of the second support being each provided with two second splicing sub-portions, wherein the two second splicing sub-portions are located at a top and a bottom of a same side of the second support, respectively, and wherein each of the two first splicing sub-portions is connected to a corresponding one of the two second splicing sub-portions.
2 . The battery pack according to claim 1 , wherein each of the two second splicing sub-portions comprises a plate body arranged on an outer side surface of the second support, the plate body having a snap hole defined thereon, and wherein each of the two first splicing sub-portions comprises a snap block protruding from an outer side surface of the first support and engaged in the snap hole.
3 . The battery pack according to claim 1 , wherein the support comprises: two mounting plates; and a plurality of pillars arranged at intervals and connected to the two mounting plates.
4 . The battery pack according to claim 3 , wherein the two mounting plates comprise a first mounting plate and a second mounting plate which are opposite to each other, wherein the plurality of pillars comprises a first pillar connected to an inner surface of the first mounting plate and a second pillar connected to an inner surface of the second mounting plate, and wherein one of the first pillar and the second pillar has an insertion portion provided thereon, and the other one of the first pillar and the second pillar has a groove defined therein, the insertion portion being inserted into the groove.
5 . The battery pack according to claim 4 , wherein the groove has two side walls that are opposite to and spaced apart from each other, at least one of the side walls having an engagement hole defined thereon, and wherein the insertion portion has a protrusion provided on at least one side surface thereof, the protrusion being engaged in the engagement hole.
6 . The battery pack according to claim 5 , wherein the groove has a bottom surface connected to the two side walls, the bottom surface having a guide hole defined thereon, and wherein the insertion portion has a guide post provided on an end thereof and inserted into the guide hole.
7 . The battery pack according to claim 3 , wherein the two mounting plates comprise a first mounting plate and a second mounting plate which are opposite to each other, the first mounting plate having a plurality of first mounting portions provided on an inner surface thereof, the second mounting plate having a plurality of second mounting portions provided on an inner surface thereof, wherein the plurality of first mounting portions corresponds to the plurality of second mounting portions respectively; and wherein the battery cell comprises: a body having two ends that are accommodated within the first mounting portion and the second mounting portion, respectively; and two electrodes that are arranged on two end surfaces of the body, respectively.
8 . An energy storage device, comprising a battery pack, the battery pack comprising: at least two battery modules, wherein each of the at least two battery modules comprises a support having a splicing portion and a plurality of battery cells mounted in the support, and wherein two adjacent battery modules are connected to each other by two splicing portions; and at least one cooling assembly sandwiched between the two adjacent battery modules and in contact with battery cells located on opposite sides of the at least one cooling assembly, wherein the support comprises a first support and a second support that are adjacent to each other, wherein the first support includes a front side and a rear side, the front side and the rear side of the first support being each provided with two first splicing sub-portions, wherein the two first splicing sub-portions are located at a top and a bottom of a same side of the first support, respectively; wherein the second support includes a front side and a rear side, the front side and the rear side of the second support being each provided with two second splicing sub-portions, wherein the two second splicing sub-portions are located at a top and a bottom of a same side of the second support, respectively, and wherein each of the two first splicing sub-portions is connected to a corresponding one of the two second splicing sub-portions.
9 . The energy storage device according to claim 8 , wherein each of the two second splicing sub-portions comprises a plate body arranged on an outer side surface of the second support, the plate body having a snap hole defined thereon, and wherein each of the two first splicing sub-portions comprises a snap block protruding from an outer side surface of the first support and engaged in the snap hole.
10 . The energy storage device according to claim 8 , wherein the support comprises: two mounting plates; and a plurality of pillars arranged at intervals and connected to the two mounting plates.
11 . The energy storage device according to claim 10 , wherein the two mounting plates comprise a first mounting plate and a second mounting plate which are opposite to each other, wherein the plurality of pillars comprises a first pillar connected to an inner surface of the first mounting plate and a second pillar connected to an inner surface of the second mounting plate, and wherein one of the first pillar and the second pillar has an insertion portion provided thereon, and the other one of the first pillar and the second pillar has a groove defined therein, the insertion portion being inserted into the groove.
12 . The energy storage device according to claim 11 , wherein the groove has two side walls that are opposite to and spaced apart from each other, at least one of the side walls having an engagement hole defined thereon, and wherein the insertion portion has a protrusion provided on at least one side surface thereof, the protrusion being engaged in the engagement hole.
13 . The energy storage device according to claim 12 , wherein the groove has a bottom surface connected to the two side walls, the bottom surface having a guide hole defined thereon, and wherein the insertion portion has a guide post provided on an end thereof and inserted into the guide hole.
14 . The energy storage device according to claim 10 , wherein the two mounting plates comprise a first mounting plate and a second mounting plate which are opposite to each other, the first mounting plate having a plurality of first mounting portions provided on an inner surface thereof, the second mounting plate having a plurality of second mounting portions provided on an inner surface thereof, wherein the plurality of first mounting portions corresponds to the plurality of second mounting portions respectively; and wherein the battery cell comprises: a body having two ends that are accommodated within the first mounting portion and the second mounting portion, respectively; and two electrodes that are arranged on two end surfaces of the body, respectively.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present application claims priority to Chinese Patent Application No. CN202220024019.X, filed on Jan. 6, 2022, which is hereby incorporated by reference in its entirety. TECHNICAL FIELD The present utility model relates to the technical field of batteries, and in particular, to a battery pack and an energy storage device. BACKGROUND In order to obtain required performance parameters such as voltage, current, and capacity, a battery pack usually includes a plurality of battery cells that are electrically connected in series, parallel, or series-parallel. At the same time, in order to ensure the safety of the battery pack, the battery pack includes a cooling assembly that can cool the battery cells to ensure that the temperatures of the battery cells are within a normal range. In the related art, for different types of battery packs, the number of the battery cells required is usually different, and the matched cooling assembly will change due to the change of the number of the battery cells. For battery pack manufacturers, different production lines or production equipment may be required to manufacture different types of battery packs, which will increase the cost of the battery packs. SUMMARY Embodiments of the present utility model provide a battery pack and an energy storage device. The battery pack provided by the embodiment of the present utility model includes: at least two battery modules and at least one cooling assembly. Each battery module includes a support having a splicing portion and a plurality of battery cells mounted in the support. Two adjacent battery modules are connected to each other by the two splicing portions. The at least one cooling assembly is sandwiched between the two adjacent battery modules and is in contact with the battery cells located on opposite sides of the at least one cooling assembly. According to the battery pack, the two battery modules are spliced together through the splicing portions of the support, and the cooling assembly is sandwiched between the two adjacent battery modules, so that the battery modules and the cooling assembly can be spliced as needed, then battery packs with different numbers of battery cells can be conveniently achieved, and the cost of the battery pack is reduced. In some embodiments, the support includes a first support and a second support that are adjacent to each other. The splicing portion includes two first splicing sub-portions that are spaced apart from each other on the first support, and two second splicing sub-portions that are spaced apart from each other on the second support. The first splicing sub-portions are connected to the second splicing sub-portions. In some embodiments, the two first splicing sub-portions are located at a top and a bottom of a same side of the first support, respectively. The two second splicing sub-portions are located at a top and a bottom of a same side of the second support, respectively. In some embodiments, each of the two second splicing sub-portions includes a plate body arranged on an outer side surface of the second support. The plate body has a snap hole defined thereon. Each of the two first splicing sub-portions includes a snap block protruding from an outer side surface of the first support. The snap block is engaged in the snap hole. In some embodiments, the support includes two mounting plates, and a plurality of pillars arranged at intervals and connected to the two mounting plates. In some embodiments, the two mounting plates include a first mounting plate and a second mounting plate that are opposite to each other. Each of the plurality of pillars includes a first pillar connected to an inner surface of the first mounting plate and a second pillar connected to an inner surface of the second mounting plate. One of the first pillar and the second pillar has an insertion portion provided thereon, and the other one of the first pillar and the second pillar has a groove defined therein. The insertion portion is inserted into the groove. In some embodiments, the groove has two side walls that are opposite to and spaced apart from each other. At least one of the side walls has an engagement hole defined thereon, and the insertion portion has a protrusion provided on at least one side surface thereof. The protrusion is engaged in the engagement hole. In some embodiments, the groove has a bottom surface connected to the two side walls. The bottom surface has a guide hole defined thereon. The insertion portion has a guide post provided on an end thereof. The guide post is inserted into the guide hole. In some embodiments, the two mounting plates include a first mounting plate and a second mounting plate which are opposite to each other. The first mounting plate has a plurality of first mounting portions provided on an inner surface thereof. The second mounting plate has a plurality of second mounting portions provided on an inner surface thereof. Th